find the average of his two highest test scores

Q:A players average score on 4 tests is 85.5. The average of his 3 highest scores is 87, and his two lowest scores are the same as each other. What is the average of his two highest test scores?
😁

Replies

  • CIVILPRINCESS
    CIVILPRINCESS
    let w,x,y,z be the four scores.
    (W+X+y+z)/4=85.5
    W+X+y+z= 4x85.5
    Y=z
    =>w+x+2y=4x85.5
    W+x+y= 3x87
    Y=3x87-x-w
    W+x+2(3x87-x-w)=4 x 85.5
    -w-x=4x85.5-2x3x87
    W+x=-342+522=180
    There fore (w+x)/2=90(ans)

    is it right:?:
  • Saandeep Sreerambatla
    Saandeep Sreerambatla
    Yep it is CP 😀

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